Automatic stop for talking-machines.



C. H. MURPHY.

AUTOMATIC STOP FOR TALKING MACHINES.

APPLICATION FILED MAY 15. 1916.

121,195.. Patented Dec. 26,1916.

EZ QW ,4 TTOR/VEYS "o i amar-nan a .ULAEEEHEE (3% POINT PLEAEiANT, NEW JEESEY.

itlj'ii i iitlialhtilll NEG? F91 TALKIHG-MAGHINEEl.

specification of Letters Patent.

remiss.

Application flied m 3.5, 1918. Serial No. 97,613..

To all whom it may concern:

Be it known that l, CLARENCE H. Mun- PHY, a citizen of the United tltates, and a resident of Point Pleasant, in the county of Ucean and State of New Jr-irsey have invented an Impro ement in Ailllflll'lilblc Stops for Talking-ll lachines, of which the following is a specification.

This invention is an improvement in talking machines and has particular reference to a device for automatically stopping; movement of the record'at a predetermined point.

An object or the invention is the provision of a device adapted to be applied to any well-known type of talking machine wherein the movement of the sound box, in

traversing the record groove will automatically trip a mechanism to operate a brake member for bringing the turntable to rest, said mechanism having associated therewith a novel device for adiusting the same to a position where the operation thereof willbe effected at a predetermined point.

The inventive idea involved is capable of receiving a variety of mechanical expressions, some of which, for the purpose of illustrating the invention, are shown in the accompanying drawing, in which- Figure l is a top plan View of a portion of a talking machine of the swinging tone arm type showing the automatic stop applied thereto and constructed in accordance with the invention. Fig. 2 is a transverse section of the stop showing" the manner of initially adjusting the device. Fig. 3 is a view similar to Fig, 2 showing the parts in the position just previous to being contacted by the tone arm and the brake operated. Fig. 4 is a section on the line r-"ii: of Fig. 1, the parts being in the position assumed after the brake is released. Fig. 5 is a section on the line 5-5 of Fig. 2. Fig. 6 is a section on the line 6'(3 of Fig. 3. Fig. 7 is' a side elevatlon partly in section or a slightly difl'crcnt form of the invention.

There is shown 1n the drawing what are now believed to be preferred forms of the invention and by reference to Figs. 1 to 6 inclusive. it will beseen that the same 1s shown in connection with a talking machine of the dish type having the usual turn-table are secured to the talking machine at a point adjacent the turn-table 10 and the tone arm 11. The support '13 has mounted longitudinally thereof and extending through its ends a brake member 15, preferably in the form of a rod, having a buffer 16 at one end adapted to contact with the turn-table 10 whereby the impact of the parts will be cushioned. The support 13 is so'arranged that the brake member 15 will extend radially with relation to the center of the turntable.

The end of the support 13 adjacent the turn-table 10 has associated therewith a trip mechanism for controlling the operation of the brake member 15, said mechanism preferably including a latching element. 17, pivoted at 18 to said end of the support and extending transversely thereof, one end of said latching element having connected thereto a small coil spring 19 the other end of which is secured to said support in such way as to at all'times retain the latching element in engagement withthe bottom of the brake member 15. This spring 19 also causes said latching element to engage a locking portion in the form of a notch '20 in the bottom of said brake member adjacent the turn-table engaging end thereof when said brake member is withdrawn from contact with said turn-table and previous to being released by said trip mechanism. The

brake member 15 is withd awn from brakin position through the medium of a vertica ly arranged rod 21 having its lower end secured to the brake member 15 in any preferred manner and its upper end extending through a slot 22 formed longitudinally of the top. of the support 13, a knob or handle 23 being secured to said upper end to facilitate the manipulation of the brake memher. In order to cause the brake member to engage the turn-table, when said member is released by the trip mechanism, as will presently appear, there is provided .a tension element in the form of a coil spring 24 having one end'connected to one end of the support 18 while the other end is connected to said brake member.

The trip mechanism preferably includes, in addition to the latching element 17, a tone arm contacting lever 25 the lower end of which is 'pivotally mounted upon a small bolt 20 carried by the outer end of said latching element and having mounted there rates-tea nee. as, rare.

on a milled nut 27 employed for the purpose of releasably securing said lever in an adjusted position so that when operated by contact with the tone arm 11, as will pres ently be described, the latching member 17 will be thrown to the position shown in Fig. 4 against the tension of the spring 19 where upon the spring 24 will operate upon the brake member 15 and cause the same to engage the turn-table 10.

In positioning the lever 25 for proper contact by the tone arm 11 at a predetermined point the invention contemplates an initial manual adjustment and a secondary automatic adjustment. For securing the initial adjustment there is provided an adjusting device 28 pivoted at 29 adjacent the upper end of the lever 25 and preferably having an enlarged end 30 which overbalances the deviceand normally maintains it in the position shown in Fig. 3. The first step in this adjustment is to swing the tone arm 11 over the record surface until the stylus of the sound box 12 is directly over one of the innermost grooves. The adjusting device 28 is then grasped as indicated in Fig.2 and moved to a. substantially horizontal position and then the lever 25 is swung about its pivot 26 until the enlarged end 30 of the adjusting device contacts the tone arm 11 whereupon the nut 27 may be tightened if there is not already suflicient friction at the piyot point to maintain the lever in its adjusted position. The release of the adjusting device 28 permits the same to'assume the position shown in Fig. 3 at which time, and before the secondary adequal to the distance between the justment, the upper end of the lever 25 will be spaced adistance from the tone arm 11 enlarged endgof the adjusting device and said upper end of the lever. The knob 23 is then pulled along the slot 22 which movement retracts the brake member 15 from engagement with the turn-table 10 until the latching element 17 is caused, by the spring 19, to engage the notch 20 in the said brake member. The slight movement of the latching element 17 about its pivot 18 results in the secondary automatic adjustment of the lever 25 as it will be seen that when the said latching element swings about its pivot the upper end of thelever 25 will describe a circle, with the pivot 18 as a center, until said end assumes the position that the enlarged end 30 of the adjusting device 28 maintains when the same is'a ljusted, as shown in Fig. 2,

whereupon said upper end of'the lever 25 \\'Ill also contact the tone arm 11.

the outermost groove of the record which is reproduced and at the end of said reproduction the tone arm '11 will contact the upper end of the lever 25 and operate the trip mechanism. against the tension of the spring 19, thereby nlcasing the brake mem- The ' stylus ot' the sound box is then engaged with her and permitting the same to engage the turn-table which is then brought to a stop.

In Fig. 7 a slightly modified form of the invention is shown wherein the spring 24 of tho,first embodiment described is replaced by a spring 24; coiled about the brake member 15, one end of said spring engaging a flange 31 on said brake member while the other end thereof engages the adjacent end of the support 13. The brake member extends through the ends of the support, as previously described, and in addition there is provided a brake 32 for receiving the braking end of said member 15, the latter end being reduced to provide a locking portion 33.

What is claimed is:

1. In an automatic stop device for talking machines, the combination with a turntable and a tone arm; of a brake member slidable radially relative to the axis of rotation of said turn-table for engaging the same to stop rotation thereof, an adjustable trip mechanism arranged in the path of movement of said tone arm and engaging said brake member to retain the same out of braking position, and an'adjusting device carried by said trip mechanism and adapted to be moved temporarily, into engagement with the tone arm to adjust said mechanism with respect to the tone arm and then disengaged from the tone arm to permit said mechanism to be operated, by contact with the tone arm, to release said brake member at a. predetermined point in the reproduction of a record.

2. In an automatic stop device for talking machines, the combination with a turn table and a tone arm; of a brake member for engaging said turntable to stop rotation thereof, an adjustable trip mechanism arranged in the path of movement of said tone arm and engaging said brake member to retain the same out of braking position, and an adjusting device pivoted to said trip mechanism and normally maintained, by gravity,out of adjusting position, said adjusting device being adapted to contact the tone arm to adjust said trip mechanism to a position to be operated, by contact with the 4 the tone arm, an adjusting device carried by the portion of the trip mechanism, extending into the path of the tone arm and adapted to be temporarily moved into engagement with the tone arm to adjust the said portion with respect to the tone arm and then disengaged from the tone arm to permit said portion to be operated by contact with the tone arm, and means for withdrawing said brake member from braking position, whereby said trip-mechanism will be moved into engagement with the locking portion of the brake members and the portion thereoi carrying the adjusting device moved into engagement with the tone arm.

at. In an automatic stop for talking machines, the combination of a support, a turntable, a brake member carried by said sup port, a latching element pivoted to said support for retaining said brake member out of braking position and having its axis of rtation transverse to that of said turn-table, a trip member connected to said latching element, for operating the same and adjustable into the path of a movable part of the machine, an adjusting device carried by said trip member and contacted by said movable part when initially adjusting said trip member, and means for shifting said brake memher out of braking position whereby to pering position, a trip member wvhercin the trip member assumes mit said latching element to move about its pivot and said trip member to assumethe position of initial adjustment of said adj usting device. 4

5. In an automatic stop for talking machines, the combination of a support, a turntable, a brake member carried by said support, a latching element pivoted to said support for retaining said brake member out of braking position, a trip member-connected to said latching element, for operating the same and adjustable into the path of a movable part of the machine, an adjusting device carried by said trip member and contacted by said'movable part when initially adjusting said trip member, means for shifting said brake member out of braking position whereby to permit said latching element to move about its pivot and said trip'member to assume the position of initial adjustment of said adjusting device, and tension means connecting said support with said brake member for throwing the. same to braking position when released by said latching element.

(3. In an automatic stop for talking machines, the combination of a brake member, a latching element engaging a, portion thereof for retaining the same out of brakhaving initial and secondary adjustments in the path of movement of a movable part of the machine, an. adjusting device adapted for contact with said movable part for permitting said initial adjustment, and-nieans for shifting said brake member into latched'position and thereby effecting said secondary adjustment the position maintained by said adjusting device during said initial adjustment.

7 In an automatic stop for talking machines, the combination of a brake member,

a latching element engaging a portion therev of for retaining the same out of braking position, a trip member having manual and automatic adjustments in the pathot' move ment of a movable part ofthe machine, an adjusting device adapted forcontact with said movable part for permitting said manual adjustment, and means for shifting said brake member into latched position thereby effecting said automatic adjustment wherein the trip member automatically assumes theposition maintained by said adjusting device during said'initial adjustment.

8. In an automatic stop. for talking machines, the combination of a brake memben, a latching element engaging a port-ion thereof for retaining the same out of braking position, a trip member having initial and secondary. adjustments .in the path of movement of a movable part of the machine, an

adjusting device ivoted to one end of said trip member an adapted for contact with said movable part for permitting said initial adjustment and movable out of contact therewith when released, and means for shifting said brake a latching element engaging a portion there of for retaining the same outot braking having a weighted end position, a trip member having-initial and secondary adjustments in the path of movement of a movable part of the machine, an

adjusting device pivoted to said trip member and having contact with said movable part for effecting said initiah adjustment and movable out of contact therewith when released, and means for shifting said brake member into latched position, thereby permitting said secondary adjustment wherein the brake member assumes the position maintained by said adjusting device during said initial adjustment.

10. In an automatic stop for talking ma-' chines, the combination of asubstantially in-- verted U-shaped support, a brake member slidable longitudinally of said support and arranged in substantial alinement with the aXis of the turn-table of the machine, a latching element carried by saidsupport for retaining said brake member out of braking position, a trip member connected to said latching element for operating the same and by saidtrip member and contacted by said movable parts when initially adjusting said trip member, and means for shifting said adjustable into the path of a movable part of the machine, an adjusting device carried brake member out of braking position whereby to permit said latching element to move about its pivot and the trip member to assume the position of initial adjustment of said adjusting device.

1,1. In an automatic stop for talking machines, the combination of a brake member, a latching element associated therewith for retaining the same out of braking position, a trip member carried by said latching element and adjustable into the path of movement of a movable part of the machine, said trip member having primary and secondary adjustments, an adjusting device pivoted to said trip member and adjustable in the path of movement of said movable part for effecting said primary adjustment, and means-for withdrawing said braking element from braking position whereby said trip member will assume the position of said adjusting device when making the primary adjustment and thereby el'l'ecting said secondary :uljustment.

1 2. In an auton'iatic stop for talking machines, the combination of a brake member, means for locking and releasing the brake member and including a member extending member into the path of the tone arm and adapted to be engaged thereby to release the brake member, and an adjusting the member of the braking and releasing means and adapted to be moved temporarily into engagement with the tone arm to adjust the said member with respect thereto. and then disengaged from the tone arm to permit said member'to contact with the tone arm and to be operated thereby.

13. In an automatic stop for talking machines, the combination of a brake member, means for locking and releasing the brake and including an arm extending in the path of the tone arm and adapted to he engaged thereby to release the brake member, and a pivoted'and weighted member mounted in the free end said member being adapted to be engaged with the tone arm to permit the arm to be properly adjusted with respect to the tone arm.

CLARENCE H. MURPHY. W'itnesses:

Tues. C. Cun'rrs, Gnonem T. GRAHAM,

device carried by 1 of the said arm, 

